Package org.eclipse.persistence.internal.indirection

Class UnitOfWorkTransformerValueHolder

java.lang.Object

org.eclipse.persistence.internal.indirection.DatabaseValueHolder

org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder

org.eclipse.persistence.internal.indirection.UnitOfWorkTransformerValueHolder

All Implemented Interfaces:

Serializable, Cloneable, ValueHolderInterface, WeavedAttributeValueHolderInterface, WrappingValueHolder

public class UnitOfWorkTransformerValueHolder
extends UnitOfWorkValueHolder

UnitOfWorkTransformerValueHolder wraps a database-stored object and implements behavior to access it. The object is read from the database by invoking a user-specified transformer object. This value holder is used only in the unit of work. Most of the methods ignore the actual attribute values and are simply used to trigger instantiation.

Author:

Sati

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected Object	cloneOfObject
protected Object	object

Fields inherited from class org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder

backupValueHolder, mapping, relationshipSourceObject, remoteUnitOfWork, sourceAttributeName, sourceObject, wrappedValueHolder, wrappedValueHolderRemoteID

Fields inherited from class org.eclipse.persistence.internal.indirection.DatabaseValueHolder

isCoordinatedWithProperty, isInstantiated, row, session, value

Fields inherited from interface org.eclipse.persistence.indirection.ValueHolderInterface

shouldToStringInstantiate

Constructor Summary

Constructors

Modifier	Constructor	Description
	UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue, Object original, Object clone, AbstractTransformationMapping mapping, UnitOfWorkImpl unitOfWork)
protected	UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue, Object clone, DatabaseMapping mapping, UnitOfWorkImpl unitOfWork)

Method Summary

Modifier and Type	Method	Description
protected Object	buildBackupCloneFor(Object cloneAttributeValue)	Backup the clone attribute value.
Object	buildCloneFor(Object originalAttributeValue)	Clone the original attribute value.
protected Object	getCloneOfObject()
protected Object	getObject()
void	setValue(Object theValue)	Ensure that the backup value holder is populated.

Methods inherited from class org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder

getBackupValueHolder, getMapping, getRelationshipSourceObject, getRemoteUnitOfWork, getSourceAttributeName, getSourceObject, getUnitOfWork, getValueFromServerObject, getWrappedValueHolder, getWrappedValueHolderRemoteID, instantiate, instantiateForUnitOfWorkValueHolder, instantiateImpl, isEasilyInstantiated, isPessimisticLockingValueHolder, isSerializedRemoteUnitOfWorkValueHolder, releaseWrappedValueHolder, resetFields, setBackupValueHolder, setMapping, setRelationshipSourceObject, setRemoteUnitOfWork, setSourceAttributeName, setSourceObject, setWrappedValueHolder, shouldAllowInstantiationDeferral

Methods inherited from class org.eclipse.persistence.internal.indirection.DatabaseValueHolder

clone, getRow, getSession, getValue, getValue, isCoordinatedWithProperty, isInstantiated, isNewlyWeavedValueHolder, isTransactionalValueHolder, postInstantiate, privilegedSetValue, setInstantiated, setIsCoordinatedWithProperty, setIsNewlyWeavedValueHolder, setRow, setSession, setUninstantiated, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

cloneOfObject

protected transient Object cloneOfObject

object

protected transient Object object

Constructor Detail

UnitOfWorkTransformerValueHolder

public UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue,
                                        Object original,
                                        Object clone,
                                        AbstractTransformationMapping mapping,
                                        UnitOfWorkImpl unitOfWork)

UnitOfWorkTransformerValueHolder

protected UnitOfWorkTransformerValueHolder(ValueHolderInterface attributeValue,
                                           Object clone,
                                           DatabaseMapping mapping,
                                           UnitOfWorkImpl unitOfWork)

Method Detail

buildBackupCloneFor

protected Object buildBackupCloneFor(Object cloneAttributeValue)

Backup the clone attribute value.

Specified by:

buildBackupCloneFor in class UnitOfWorkValueHolder

buildCloneFor

public Object buildCloneFor(Object originalAttributeValue)

Clone the original attribute value.

Specified by:

buildCloneFor in class UnitOfWorkValueHolder

getCloneOfObject

protected Object getCloneOfObject()

getObject

protected Object getObject()

setValue

public void setValue(Object theValue)

Ensure that the backup value holder is populated.

Specified by:

setValue in interface ValueHolderInterface

Overrides:

setValue in class DatabaseValueHolder